diff options
Diffstat (limited to 'Build/source/libs/mpfr/mpfr-3.1.2/src/min_prec.c')
-rw-r--r-- | Build/source/libs/mpfr/mpfr-3.1.2/src/min_prec.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/Build/source/libs/mpfr/mpfr-3.1.2/src/min_prec.c b/Build/source/libs/mpfr/mpfr-3.1.2/src/min_prec.c new file mode 100644 index 00000000000..7df9e775215 --- /dev/null +++ b/Build/source/libs/mpfr/mpfr-3.1.2/src/min_prec.c @@ -0,0 +1,33 @@ +/* mpfr_min_prec -- minimal size in bits to hold the mantissa + +Copyright 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. +Contributed by the AriC and Caramel projects, INRIA. + +This file is part of the GNU MPFR Library. + +The GNU MPFR Library is free software; you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published by +the Free Software Foundation; either version 3 of the License, or (at your +option) any later version. + +The GNU MPFR Library is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public +License for more details. + +You should have received a copy of the GNU Lesser General Public License +along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see +http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., +51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ + +#include "mpfr-impl.h" + +mpfr_prec_t +mpfr_min_prec (mpfr_srcptr x) +{ + if (MPFR_UNLIKELY (MPFR_IS_SINGULAR (x))) + return 0; + + /* from a suggestion by Andreas Enge (2010-11-18) */ + return MPFR_LIMB_SIZE (x) * GMP_NUMB_BITS - mpn_scan1 (MPFR_MANT (x), 0); +} |